Updated Installation (markdown)

Installation.md

@@ -13,7 +13,7 @@ go get github.com/gopherjs/gopherjs
 go get github.com/gopherjs/gopherwasm/js
 ```
 
-# Modules (Go 1.11 and later)
+# Modules
 
 As of Go 1.11, modules are introduced. You can work with Ebiten without GOPATH environment variable. If you want to use Ebiten with modules, execute these commands with Go 1.11:
 
@@ -31,3 +31,32 @@ go mod init example.com/m
 # `go run` installs related libraries automatically.
 go run .
 ```
+
+# Run examples
+
+Let's execute an example to check installation finished correctly.
+
+## Without modules
+
+On POSIX:
+
+```
+cd $HOME/go/src/github.com/hajimehoshi/ebiten
+go run -tags=example ./examples/rotate
+```
+
+On Windows:
+
+```
+cd %HOME%\go\src\github.com\hajimehoshi\ebiten
+go run -tags=example ./examples/rotate
+```
+
+## With modules
+
+```
+mkdir test
+go mod init example.com/m
+go get github.com/hajimehoshi/ebiten
+go run -tags=example github.com/hajimehoshi/ebiten/rotate/main.go
+```